Scraper



Nov. 9, 1943. T. J. NELSON 2,333,878

SCRAPER Filed March 2, 1942 f2 06 27 fZeo'czore JA e Z5072 Patented Nov. 9, 1943 ."I'l ii's.invention,relates .tQscrapers coil oi. the shatters. I her e'inatter described .and inere parti'ularly pointed out in the appended =c'lai.uijs'.., n I

ifhescraper wimwmc'am presentinvention is more especially; concerned is in the nature of a Y tool especially adapted foruse in removing previously, softened surface. finishes; such as and the like, from walls and ceilings.

Qnepithe objects of the present inventiqn is to provide s. toolof the kind .whichis offal simple light-weight ineiepensive.construction, is easy to use is efficient in operation for its intended piirbo Another obi est .oit'heinvention is to provide a tool. or .the kind mentioned disassembled t or cleaning or storage ina knocked downconditionand which may be .readily assexnbled -without the 'aidoitools of any kind.

furtherobjectfdf the-invention is to provide atool oitliis kind which includes means .providmg spaced scraping edges so arranged that ina scraping operation, one edge isbeing sharpened whiletheothenedgeis in actualuse I i above mentioned objects of the invent'ion aswell as others, -together with the several ad- .t hereoi will more fully appear as the specification proceeds.

In the drawing: I ,Eig.,-1dsayerspectiveview of a scraper embodying the preferred form of the invention.

Big. 2 is :a, longitudinal vertical sectional view through the scraper as taken on the line 2-4 of @Fig, 3 a stransverse vertical sectional view through the scraper as takenon the line 3-3 of n ;,3. x l g-isja v-iewfin side elevation of the scraper,

ced scale, and illustrates the manner which may be readily n-.a red in which the same is used in removing a softened surface finish from a wall or the-like. v I Fig. ;5.;is a view in side levation of certain parts of the scraper when assembled together for use in the corner 'of a room or other close ua t Reierring now in detail to the invention as illustrated-inFigs. 1 to 4.inclusive of the accompanyingdrawing, the .jmprovedscraper includes pgshallow open atop, box-.likebodv H) .of a greater l ns hth n'wi hsli bqdy, h ch is preferzably of. sheet metal, has a bottom H, side mama-4.23am .end...walls .l 3 -13.. and extending transversely of the. mid summ r .the body. is a scraper means indicated as a whole-as at H injFig. 1. Said-means includes agbacking and "formingplate-|5 which has 'a length approximating the inside width of -;the bod-y so that the ends of .said platesubstantially engage thev inner faces of theside walls l 2- -l:2.. Thesaidplate, which has a curved cross sectional shape, is made of relative stiff sheet metal'having apermanent setfor its curvature. .T-he midportion. of: -said .plat e engages upon the transverse midportion of the bottom "II -of;the body. I

. .The scraper means also includes a duplex scraper blade l5 preferably made of substantially thin flexible sheet -metal such as wafer. blade steel. This duplex blade, which isnormally flat and of substantially 1 the same length as the forming plate, is --curved in the assemblyof the scraper-parts tox engage and take .the curvature .ofsthelfo-r-mer plate. !'5.. ;When socurved, it provides two longitudinally spaced, transversely'ex tending scraping .edges 'II- I'I, disposedin the same plane. andW-hich plane is spaced .outwardly or away from theplaneofIthe .edges of the side andendwalls llaiid 13,0f the bodyjflh. ,The scraper means ,further, .iriclud'efa relatively narrow rigidpres'ser bar 18 disposed transversely upon the midrportion of the-scraperblade 'l 5 and which bar when in p1'ace, also substantially en: gages the inner "iac es of jthe side walls J'Z- -IZ of t e. .bdQYJ 0-. T b t om. su a e. or. sai'j alr. i transversely curved for; a radius to substantially coniorrn to the forming plate.

19 in c t s. th and :1: ne i fierthich extends outwardlyirorn the central portion of the b am w m ll w. W mnae h n is a carriage bolt '20, the, he'ad 2 l of which is dis} posed in a recess 22 in the outer end of the handle. is bfltfhas a squared neekitnear its end which prevents a relative turning between the handle and bolt, Said bolt is longer than theli'and le so that a part1} or its threaded and passes throug center holes in the bottom H, fblii'iifig plalte T5 and blade "i respectivly, so 'as to have a screw threaded engagement in a cei'iter'hole 'in "the pressr bar 18.

In the assembly or the p'a'its mentioned, the forming plate is disposed in position on the way so that 'i'tscenter hole registers with thecnt'er hole in the bottom H. The blade It is then placed in position to rest upon the edges of the forming plate and then the 'p'r'ess'er bar is positioned upon the blade. By ressin inwardly on the bar, the blade takes the curvature of the foririingplate. Assuming, of course, thatth'ecen ter holes of the parts are aligned, the threaded end 24 ofJthe bolt. is then inserted through said holes from the outside of the bottom wail "of the body and is caused to enter the center hole v low cost production extraneous tools.

in the presser bar. By turning the handle IS in the proper direction, the bolt end 24 is threaded into said bar which functions as a nut to cause said presser bar to draw the blade into snug engagement with the forming plate and to draw the midportion of the former plate into a tight engagement against the midportion of the bottom 'll of the body. Thus when the parts are assembled as described, the scraping means as a whole divides the ,body into two end compartments 25-25 a best appears in Fig. 2, with each half of the forming plate, longitudinally of the body, overhanging a portion of the associated I H compartment. I

I claim as my invention: 1. A scraper embodying therein a, hollow body having a bottom and side walls, rigid means in a the body and extending transversely thereof and In Fig. 4 I have illustrated the way. in which the scraper may be used to remove the softened finish 26 from a vertical wall 21. Assume, that the finish 26 is calcimine that has been softened to a pasty consistency by the application of water thereto." The scraper isturned into a position wherein the'length 01 the body is disposed in a plane parallel that-of the wall 2'! and thescraper asawhole' is then moved toward the wall so that the edges ll-l'l'of-the blade l6 engage the wall 21. The'scraper is then moved upwardly along the wall as'indicated by the arrow 28, when the uppermost margin of theblade will out under the finish 26 and scrape it from the wall 21. As the scrapedoff finish leaves the wall, it follows down about the outside ofjuppermost margin of the blade and the uppermost margin of the forming plate, to be'directed thereby intothe associated compartment 25' as tobe deposited in the 'bottom thereof as partly formed by said margin of the forming plate. Should anywater leak through betweenthe forming plate and the bottom i I of the body, such water is prevented from drippingby the wall [3 now at the bottom end of the body. In the upward movement '01 the scraper as the advance edge I! of the blade scrapes oil the finish 26, the other or trailing edge 11 of the blade "drags against the scraped oil. wall 21 so as to be kept in a sharp condition. Thus by using one edge and then the' other, in 'a. scraping operation the edges I-L-LT are keptrelativelysharp. When it is desired to empty the scraper of the surface finish which has'accumulated in the chamber 25, the

scraper-is dowsedor, rinsed in water and it is then in condition for use in a further operation. When it becomes necessary to ,workin close quarters, such as in a corner between adjacent side walls and a ceiling, the device thus far described may be readily disassembled by ,unscrewing the handle l9. .Then only the handle, forming plate, blade presser bar are assembled together as appears in Fig. 5. This reduces the overall length of the scraper to such dimensions that eitheredgeof the blade may be moved into the comer-between said walls and ceiling.

Thedevice consists of but a few parts for a and such parts may be readily assembled and disassembled without the aid of When disassembled, the parts may be packed in a relatively small package for v storage or shipment.

While in describing the invention I have referred in detail to the form, arrangement and construction of the parts makin up the scraper, the same is to be considered only in the illustrative sense so that I do not wish tobe limited thereto except as may be specifically set forthinthe appended claims. V t

I a" handle on the body.

having an outer surface curved toward theends of the body and an inner surface engaged with the bottom of the body, a, duplex blade member engaged with and conforming to the outer curved surface of said means and-having longitudinally spaced scraping edges in mplane spaced outwardly from the plane of the edges of said side walls, means for securing said rigid means and said duplex blademember in operative position in said body, and a handle fixed to the outer surface of the bottom of the body.

' ,2. A scraper embodying therein a, hollow body havinga bottom and sidewalls, rigid mean in the bodyand'extending transversely thereof and having an outer surface curved toward the ends of the body and an inner surface engaged with the bottom or the body, a duplex blade member the body and'extending transversely thereofand having an outer surface curved towardthe" ends ofthe body and an inner surface engagediwith the bottom of the bod 's-dupl x blade member engaged with-and conforming to the curved-surface of said" means and having longitudinally spaced scraping edges disposed ina plane spaced outwardly from the; plane of'the edgesof said side walls, amember engaged with 'saidduplex blade member and having a threaded hole thereinya handle engaged with the outer surfacel'of the bottom of the body, and a member fixed to the handle and extending through-said bottom of the body, said rigid meansand said blade member and having a threaded engagement in said hole in said member engaged with said duplex blade member. 3 H

' 4. A scraper embodying therein a holiow'b'ody having a bottom andside walls, a'rigid'curved plate disposed in andextending transversely of the body and curved upwardly towards the' ends of said body and engaged at its midportion with said bottom, a duplex blade member engaged with and conforming to the outer surface of said plate and havin longitudinally spaced scraping edges disposed in a plane spaced outwardly from the plane of the edges oi'said side walls, means for securing *said plate and- 'saidduplex blade member in operative position in the body and the outer surface of the bottom of 5. A scraper embodying therein a hollow body having a bottom and side walls, a flexible duplex blade having scraping edges, a rigid blade suporting member in said body and having an inner face engaged with said bottom and an outer face against which said blade'is adapted to be' dr'awns0 as to be concaved thereby,*a' forming member engaged with the midportion of the bladeQa'nd means operatively engagedwith-said forming member and extending through said blade; rigid member and body bottom respectively for; draw ing and concaving said blade againstthe-buter having a bottom and side walls, a flexible duplex blade having scraping edges, a rigid blade supporting member in said body andhaving an inner face engaged with said bottom and an outer face caved thereby, a forming member engagedwith the midportion of the blade, a handle extending against which said blade is adapted to be drawn so as to be concaved thereby, a forming member engaged with the midportion of the blade, a handle extending from the bottom of the body and carrying a part extending through said bottom, supporting member and blade respectively and having a threaded engagement with said forming member and operating in said threaded engagement to draw and concave the blade against the outer face of the supporting member and thereafter hold said parts in operative relation with the scraping edges or the blade disposed in a.

plane outwardly from the plane of the edges of said side walls.

'7. A scraper embodying therein a hollow body having a bottom and side walls, a flexible duplex blade having scraping edges, a rigid blade supporting member in said body and having an inner face engaged with said bottom and a concaved outer face against which said blade is adapted to be drawn so as to conform to and be concaved thereby, a forming member engaged with the midportion of the blade, and means operatively engaged with said forming member and extending through said blade, rigid member and body bottom respectively for drawing said blade against said concaved outer face of the supporting member so as to concave said blade and thereafter hold said parts in operative relation with the scraping edges of the blade disposed in a plane outwardly from theplane of the edges of said side walls.

8. A scraper embodying therein a hollow body having a bottom and side walls, a flexible duplex blade having scraping edges, a rigid blade supporting member in said body and having an inner face engaged with said bottom and a concaved outer face against which said blade is adapted to be drawn so as to conform to and be conperpendicularly from the bottom of the body and carrying a part extending through said bottom, supporting member and blade respectively and having a threaded engagement with said forming member and. operating in said threaded engagement to draw said blade against said concaved outer face of said supporting member so as to concave said blade and thereafter hold said parts in operative relation with the scraping edges of the blade disposed in a plane outwardly from the plane of theedge of said side walls;

9. A scraper embodying therein a hollow body having a bottom and side walls, a flexible duplex blade having scraping edges, a rigid blade supporting member in said body and having an inner face engaged with said bottom and an outer face against Whichsaid blade is adapted to be drawn so as to be concaved thereby, a forming member engaged with the midportion of the blade, and having a threaded opening therein, a handle extending from the bottom of said body and including a threaded end portion extending through said bottom, supporting member and blade respectively and having a threaded engagement in said opening in said forming member and operating in said threaded engagement to draw and concave the blade against the outer fac of the supporting member and thereafter hold said parts in operative relation with the scraping edges of the blade disposed in a plane outwardly from the plane of the edges of said side walls.

10. A scraper embodying therein a flexible duplex blade having scraping edges, a support for said blade and having a blade engageable face so formed as to concave the blade when drawn thereagainst, a forming member having a substantially full length transversely curved bearing engagement with the midportion of said blade, a handle disposed perpendicularly, to the face on the other side of said support, and means carried by said handle and extending through said support and said blade and having a threaded engagement with a part of said forming member, for holding said rigid member, said blade and said forming member in operative relation.

' THEODORE J. NELSON.- 

